Liquid-fuel torch



A. J. PREINING.

LIQUD FUEL TORCH. APPLlcATloN man FEB.2,1917.

1,558,840.v I Patented May 4,1920.

UNTTED sTATEs PATENT onnicn.

ADOLF J. PREINING, OF DETROIT, MICHIGAN.

LIQUID-FUEL TORCH.

Application filed February 2, 1917.

To @ZZ whom t may concern v Be it known that I, ADoLr J. PREINING, a citizen of the Republic of Austria, residing at Detroit, county of Wayne, State ofwlvfichigan, have invented a certain new and useful Improvement in Liquid- Fuel rllorches, and declare the following to be a full., clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

rThis invention relates to liquid fuel burners or torches and more particularly to electrically heated torches. The object of this invention is a torch in which the liquid fuel passages are electrically heated in order to produce a vapor upon passage of liquid fuel therethrough. These and other objects and the several novel features of the invention in its preferred form are hereinafter more fully described and claimed and shown in the accompanying drawings in which- Figure 1 is a view of the gasolene torch, the heating element and parts contingent thereto being shown in section.

Fig. 2 is a sectional view ofthe device with the heating element so arranged as to form a passage for the liquid fuel.

Fig. 3 is an alternative form of the de.

vice with the heating element arranged about the vapor tube.

Similar characters refer to similar parts throughout the drawing and specification.

The liquid fuel torch or burner consists of the well known baseand body 1 having an air pump 2 in the top thereof and a handle 3 by which it may be moved about. A socket 4 is formed in the top having a passage 5 therethrough and threaded at 6 to receive an upright part 7. The upright part 7 is provided with an enlargement 8 on one side which is hollow and is adapted to hold the heating element 9 which consists of resistance coils 10 embedded in some material such as enamel or the like, the niaterial used being of suicient conductivity to become easily heated. As will be noted from Fig..1 the passage 5 extends through the upright part 7 and into the chamber 12. As may also be noted,from Fig. 1, an electric socket 13 is provided on the upper side of the part 7 and wires 15 and 16 are connected to corresponding. wires on the elec- Speccaton of Letters Patent. Patented Blity 4, 1929.

Serial No. 146,301.

tric coils, the opposite ends being secured to the socket 13. A common type of plug 17 is used which is connected with feed wires 18 and 19 in the electric circuit. A valve 20 is threaded into a nut 21 which in turn is threaded to the part 7, the rod 2O being provided with a tapered end 22 to lit in a tapered opening in the part 7.

To operate the device the plug 17 is inserted in the socket 13 and the electric current is turned on at which time an air presn sure is generated by using the pump 2. When a sufficient air pressure has been generated the gasolene, kerosene or other liquid fuel will flow through the passage 5 and into the chamber 12. The chamber 12 being heated by the resistance coil 9 the fuel will become vaporized at which time it is only necessary to open the outlet by turning the valve handle 25 which allows the gasolene or liquid fuel vapor to escape into the burner tube 24 and can then be ignited by the operator. By using the torch a few minutes it becomes sufficiently heated so that the electricity may be turned off as the heat of the parts about the chamber 12 will be great enough from the burning fuel to vaporize the fuel within the chamber 12,

An alternative form of the device is shown in Fig. 2, which consists of the top of the body 1EL and the socket 4n with a passage 5 drilled therethrough and the part 7 L which is made of sufficient diameter to receive the resistance coil 9, the resistance coil being of the same material as shown at 9 in Fig. 1 and also having a passage 5 therethrough. An electric socket 13a on the side of the part 7LL is provided, also of the saine type as shown in Fig. 1. This device is'provided with the same parts as Fig. 1, the only difference being in the different shape of the part 7 a to receive the resistance coils. In this device the fuel is heated while in the passage 5a before passing into the chamber 12CL which tends to vaporize the fuel just before it enters the chamber 12a, the operation of the two devices being practically the same.

Another alternative form of the device is shown in Fig. 3, which consists of the feed tube 40 connected to the vaporizing chamber 41, the burner tube 42 and the valve 43 of the same type as before described. A tube 44 is provided connected at one end to the vaporizing chamber and at the other end to the valve 43. This tube conducts the liquid fuel vapor from the chamber Lll to the valve 3. As can be seen from the drawing, the heating element is in threaded relation with the tube el so as to make a more perfect contact between the heating element and tube so that the heat is easily conducted to the tube if rllhe heating element about the tube 44 is used for vaporir/,ing the liquid fuel before thev vaporizing chamber 4l becomes heated but when the device has been used for a few minutes the chamber il becomes sufficiently heated from the burning fuel to cause vaporization at which time the electric current may be dispensed with.

lin Fig. 3 the heating element is semidetachable. By disconnecting the elbow l5 the heating element may be easily removed from the tube and may then be placed on the same part of another burner that the operator intends to heat.

The novel features of this invention exist in discarding the well known drip cup which yis dangerous and liable to leakage and makes a large amount of smoke when used, the heating element and vaporization of the liquid fuel doing away with the old form of device. The electric heating element will vaporize the fuel in about one fourth the time required by using the well known drip cup.

F rom the foregoing description it becomes evident that the device while not being of a complex nature is much cleaner, more efficient and more easily operated than the well known type of gasolene torch.

Having thus briefly described my invention, its utility and mode of operation, what I claim and desire to secure by Letters 'Patent of the United States is l. In a liquid fuel torch or burner, a fuel supply chamber, a fuel supply tube secured thereto and having a fuel passage therethrough, the fuel supply tube being provided with a hollow enlargement on one side thereof, a valve fitting in the said enlargement, an aperture in the end of said enlargement adapted to beV closed or opened by said valve, an electric socket adjacent the said enlarged portion, an electric plug fitting the said electric socket and connected with a source of current supply, a. burner tube in threaded relation with the said 'enlargement and a resistance coil embedded in a heating Yelement adapted to fit within said enlargesupply chamber, a fuel conduit leading` therefrom to the burner, a c iambered electrical heating element within the fuel condu it through which the fuel may liow in intimate contact with the .heating element, an electrical socket provided on the portion of the conduit in which the heating `element is positioned, and a Vvalve controlling the flow of fuel through the heating element.

3. ln a liquid fuel torch or burner, a fuel supply chamber, a. fuel supply tube connected to the said chamber and having a fuel passage, the said fuel supply tube having an eiilargeinent on one side thereof at the upper end, an electric heating element cylindrical in form, a chamber therein, said heating element adapted to fit within the said enlargement, the said heating' element being connected with a source of current supply, means for regulating theV flow of fuel vapor from the said chamber, and means for forcing fuel through the said fuel passage.

4i. ln a liquid fuel torch or burner, a fuel supply chamber, a fuel supply'tube secured thereto and having a fuel passage therethrough, the fuel supply tube having a hollow enlargement on one side thereof, a burner tube secured to the enlargement, an electric heating element carried in said enlargement and provided with a chamber in connection with a source of current supply and adapted to vaporize the fuel, means for forcing the liquid fuel through the fuel passage, and means for regulating the supply of fuel as it passes into the burner tube.

In testimony whereof, l sign this speci fication.

AD OLF J. PREINING 

